US PATENT SUBCLASS 377 / 121
.~.~.~ Field-effect device (e.g., JFET, IGFET, MNOS)

Current as of: June, 1999
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377 /   HD   ELECTRICAL PULSE COUNTERS, PULSE DIVIDERS, OR SHIFT REGISTERS: CIRCUITS AND SYSTEMS

118  DF  PULSE COUNTING OR DIVIDING CHAINS {4}
119  DF  .~ Using bistable regenerative trigger circuits {3}
120  DF  .~.~ Using only semiconductors having at least three electrodes {3}
121.~.~.~ Field-effect device (e.g., JFET, IGFET, MNOS)

DEFINITION

Classification: 377/121

Field effect device (e.g., JFET, IGFET, MNOS):

(under subclass 120) Subject matter where the active element is a field-effect device.

SEE OR SEARCH THIS CLASS, SUBCLASS:

74, for shift registers using field-effect transistor-type logic circuits in the input circuit.

79, for shift registers with phase clocking or synchronizing circuits using field-effect transistors.

105, for phase clocked counters using field-effect transistors.

117, for counters having transfer means which use field effect transistors.

SEE OR SEARCH CLASS 327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,

208+, for a miscellaneous bistable circuit utilizing an FET.